Romelu Lukaku's agent Christope Henrotay has revealed that they are waiting to hear Jose Mourinho's plans for next season, admitting that the expected arrival of a big-name striker at Stamford Bridge may affect his client's future.

Mourinho has admitted several times this season that he is desperately looking to sign an established centre forward this summer, with Fernando Torres, Samuel Eto'o and Demba Ba failing to earn a regular spot in his starting line-up during the current campaign.

And with recent reports claiming that Chelsea have already agreed terms to sign Atletico Madrid star Diego Costa, Lukaku's agent has revealed that his client future is uncertain.

"For the moment, Romelu belongs to Chelsea. He has two years left on his contract. It's going to depend on Chelsea. After that, we'll see together what the best options are if Chelsea decide to let him go," he said to Evening Standard.

"That they want to bring in a big-name striker has been well‑documented. But Chelsea need lots of great strikers. And if there are too many, they'll choose to allow Romelu to leave. But if they think there aren't enough forwards, perhaps Romelu will say, 'I'm interested in prolonging the adventure'. But it's still too soon."

Lukaku has spent the season on loan at Everton, scoring 15 goals in all competitions but reports recently suggested that Mourinho is planning to cash in on him in order to fund moves for new additions.

Meanwhile, earlier this week Everton boss Roberto Martinez suggested that Lukaku's future will not be decided until after the World Cup finals – even though he is keen on prolonging the Belgium international's spell at Goodison Park.

"The parent club, Chelsea, are delighted with his progress and the player has developed an incredible relationship with our fans. His memories will never evaporate, but we will see what's next," he said.

"We'll see what's the best thing for everyone. But everything will be in stages: how Chelsea are doing in their own squad and how that frees some players. It's going to take a bit of time and I don't think Romelu's situation is going to be resolved before the World Cup, in truth. I think it will be after the World Cup."